.button-group {
    padding-top: 50px;
    padding-left: 15px;
    width: 250px;
    height: 250px;
//background-color: pink;
}

.outter-circle {
    position: relative;
    margin-left: 10px;
    width: 200px;
    height: 200px;

    border-radius: 100%;
    overflow: hidden;
    transform-origin: center;
    transform: rotate(45deg);
}

.outter-circle:hover {
    background-color: lightcyan;
}

.outter-circle:active {
    background-color: #be8c3d; /* 点击按钮时改变背景颜色为金色 */
}

.inner-parts {
    cursor: pointer;
    float: left;
    width: 100px;
    height: 100px;
    line-height: 140px;
    text-align: center;
}

.silver {
    background-color: silver;
}

.gold {
    background-color: silver;
}

.blue {
    background-color: silver;
}

.brown {
    background-color: silver;
}

.inner-parts:hover {
    background-color: lightblue; /* 鼠标悬停时改变区域背景色 */
}

.inner-circle {
    position: absolute;
    margin-top: 50px;
    margin-left: 50px;
    width: 100px;
    height: 100px;
    line-height: 100px;
    text-align: center;
    border-radius: 100%;
    background-color: #08163f;
}

.rotate {
    display: inline-block;
    transform: rotate(-45deg);
}
